﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp2
{
    class Program
    {
        static void Main(string[] args)
        {
            AA bb = new AA();
            bb.A = 123;
            bb.B = "快乐";
            bb.C = 456;
            bb.hi();
            Console.ReadKey();
        }
    }
}
